Switch console logging to use @logtail/js

[dmose]

Please replace all the existing console logs in the app with the npm @logtail/js package.

Quick start docs are here:

https://betterstack.com/docs/logs/javascript/install/#logging-from-browser-and-node-js

Be sure to override .send with a logger that writes to stderr instead of sending over HTTP to someplace.

Use test-driven-development.